I know all dogs sniff some more than others. I also know dogs use their nose for much of the same reson we use our eyes. Recently my little terrier has been doing nothing but sniffing. She sniffs evey room on the floors, baseboards, the air, blankets etc. Even when it's bed time she's laying down with her little sniffers going.
Anyone have any ideas on this. It seems to be a new behavior. Do she smell mice? Do she have allergies? Is she looking for food (has access to her food all day).Could it be a more serious problem?

Side notes: shes 3 yrs old, iv noticed since she finished antibotics 2 weeks ago for diarrhea that she visits her water dish and food bowl more often but not a huge increase in water or food intake -she will not eat or drink at all unless we are home with her which is her normal behavior. She's playful and seems to be a happy dog.

my hearing dog was trained to let me alert me to sounds , like the phone ringing etc. So when Finlay started to stand next to a wall and cock his head I was not sure what he was trying to tell me. I then realize he was telling there a mouse or mice in the house! This was one sound Finlay was not trained to listen for. I was told Marty is part terrier and poodle and when we're outside and Marty pick up a sense he will lift his little face up and turn on his nose to high speed and you can his nose move little crazy.

It does sound a lot like the behavior ours show when there's a mouse in the house, Jen. Sometimes you can hear rodents gnawing in the walls at night if that's what it is. Normally I get confirmation when I hear hubby and the Pack (8 dogs, all woosses) running down the hall with a mouse in hot pursuit (yes, none of them like mice much! ) Live traps are pretty cheap--we always have some onhand and bait them with nuts, then release the little varmints out back. (Probably, they end up right back in the garage or maybe even the house, but it makes hubby and the dogs feel better if they see me take them away. )